视频: ARISSat - 1 [复制链接]

http://v.youku.com/v_show/id_xmju2nzc0nji0.html


arissat-1 to be activated aboard iss on april 12
the arissat-1 satellite, presently still inside the iss, will be turned on and use an external antenna on 12 april 2011 to celebrate the 50th anniversary of yuri gagarin's first manned space flight. amsat will support this event and issue certificates to those stations reporting reception of the arissat-1 signals. roscosmos has announced that the satellite will be deployed into orbit during the next eva in july of this year.

arissat-1 to be activated aboard iss starting april 11
the arissat-1 satellite, presently still inside the iss, will be turned on and use an external antenna to celebrate the 50th anniversary of yuri gagarin's first manned space flight. the transmissions will begin on monday 11 april 2011 at 14:30 utc and continue until 10:30 utc on 13 april 2011.

due to the fact that the solar panels are covered, the satellite will be powered only by the onboard battery. the satellite will run in low power mode. this means that the transmissions will cycle on/off. they will be on for 40-60 seconds and off for 2 minutes.

145.950 mhz fm downlink:
fm transmissions will cycle between a voice id, select telemetry values, 24 international greeting messages in 15 languages and sstv images. one of the messages will be a conversation between yuri gagarin and ground control.

145.919 mhz cw beacon
the cw transmissions will be callsign id, select telemetry, and callsigns of people actively involved with the ariss program.

145.920 mhz ssb bpsk-1000 telemetry
the bpsk transmissions will feature a new 1kbpsk protocol developed by phil karn, ka9q to be readable in low signal level conditions. the bpsk data will transmit satellite telemetry. given the low duty cycle of the spacecraft, those planning to receive the digital telemetry are encouraged to record the entire signal band using the funcube dongle or sdr-iq receivers. download arissattlm free ground station soundcard demodulator and display software here. the arissattlm software user guide is available here.

note that the linear transponder will not be active during this event. specific only to this event, planning is currently underway to provide an additional fm broadcast downlink at 437.550 mhz.

amsat will issue commemorative certificates to those receiving the transmissions and sending an email to gagarin@arissat1.org with your name or group, a description of what you heard and the utc time you heard it. recording the battery voltage values and the utc time you received them will be especially helpful.

listen to the podcast with dave jordan, aa4kn, on the air talking about arissat-1 on npr's "science friday" program. (at the 4 min: 40 sec point)

roscosmos has announced that the satellite will be deployed into orbit during the next eva in july of this year.

昨晚蹲守很久没有信号，今晚继续。

希望有收获

很是失望。

http://www.issfanclub.com/node/31090#comment-15814

with a school contact this morning and packet active on 145.825,
that means that iss is back to normal operations. the russians
apparently weren't able to fulfill their planned arissat-1 schedule.
next opportunity should be when it is deployed in july.

看来老毛子很不可靠。

arissat-1 not heard during gagarin commemoration the planned operation of arissat-1/radioskaf-v/kedr on april 11 and april 12 from inside the international space station as part of the commemoration of the 50th anniversary of yuri gagarin's flight was not successful. no earth stations on the ground reported hearing transmissions on the arissat-1 downlink(145.950 mhz for fm analog/145.920 mhz